Name: Mekhi, (Force-sensitive clone) after he renamed himself as Mortis

Age: 15, (but stop at the age of 20 when he became immortal)

Descriptions: Has short messy green and white hair on each side and has a birthmark on the forehead. He also has Heterochromia eyes; Sky Blue left eye and acidic yellow right eye though everyone kinda mistaken him for a Sith. When he first met Mortis' world, The Daughter and The Son transfer their power onto him, consider to be called 'The Neutral' which his face now has blue markings on the right while red markings on the left, even all over his body. Even the Father transfer all his wisdom and knowledge onto him.

He was killed by Anakin Skywalker after he was titled as the Jedi Knight but when he became immortal due to Mortis children's power, his body stopped aging (which he now has a body of an 20 year-old). After many years passed, the concept of a "lifespan" does not apply to him. Now he stand the center of both sides, sometimes he disappears without a trace. He became the first gray jedi knight who never dies which he was called, 'The Gray Knight'

Powers: Lightside and Darkside, controls elements, powers of time and space, future vision and shapeshifting. He can even regenerate himself whenever he was killed multiple times.

Weapon: White Lightsaber and Darksaber

Background:

Mekhi was found as a 8-year old child, in an uncharted planet by Mace Windu along with his troopers which he has no memories of how he got there. Though, Mekhi is an indecisive, curious and quiet boy, sometimes clueless. He lacks common sense when it comes to not understanding about the world he sees but also repressed his emotions as a defense mechanism when needed. 5 years later, he slowly beginning to open up when he first met Ahsoka Tano and Anakin Skywalker. After training, He became Obi-wan's Padawan though he showed quite a powerful child and once never get swayed to the dark side, only remain neutral. 

In Mortis World, before Anakin begin his test since he was the Chosen one, Mortis took notice of Mekhi and he seems convinced that he considered Mekhi, an abomination (which made him a worthy candidate) as he tried to pass down his knowledge onto the boy's mind using his power until he was interrupted by Obi-wan. After the Daughter was killed, she transferred her power onto Mekhi which made the blue marking appeared just so the light will not fade. When Father killed himself in order to stop his Son's ambition, however Son forcefully transferred his power onto Mekhi which made the red marking appeared in order the darkness to prevail. Because of that, he now holds the power of the light side and the dark side, just like Father.

After Ahsoka left the Republic, Mekhi began to doubt about his existence as he searches for answer about his origin until he found out that he was a product of a war by a foolish scientist, for using the kyber crystal energy to create an enhance super being to destroy the Jedi and the Sith after he died from a shot. He didn't like the idea of being treated as an object and don't know what to think of.

 When Anakin turned to the Dark Side, he said that he was jealous of Mekhi ability, worried that he might surpass him since he became the Jedi Knight. He added that if only he was never born which hurt Mekhi's pride. He witness Obi-wan and Anakin fighting each other, he dove in and tries to stop the madness until he took Obi-wan's blow by being stabbed by Anakin's lightsaber through the heart, much to Obi-Wan's dismay as he watch Mekhi's body fell on the abyss. 

Fortunately, He survived due to Mortis children's power, which he noticed his body stopped aging and became immortal. Therefore, he now abandoned his old name and rename himself, Mortis. With his newfound power, he was forced to watch universe waged war, much to his disappointment which made him decided that he will help the Rebellions to the end. Just ensure the Empire doesn't know about his existence, he used his shape shifting powers to change forms.